Fix textbook tests so a11y tests only run in a11y test phase

removing extra instance of MILESTONES_APP

Not able to reproduce flakiness.
TNL-5513

Updating logging for TNL-5697

Christina/javascript loader

New inline discussion home view TNL-4756

Stabilize textbook tests

Update translations (autogenerated message)

TNL-4756

for TNL-5697

Cdodge/restricted oauth2 applications

Allows ChoiceResponse problems to set correctness with python variables

determine choice correctness, as MultipleChoiceResponse problems already do.

Adds a unit test for this change, and for the existing MultipleChoiceResponse
computed correctness capability.

Update persistent grades asynchronously

ORA version update

Move dark_lang and lang_pref apps to openedx/core

Merge hotfix back to master.

Pull hotfix in to release branch.

For better user-facing performance, the SCORE_CHANGED signal is now handled by
enqueueing an async task to update the relevant stored grade, rather than
making the request wait until that operation finishes.

TNL-5738

Also reformat to 4 spaces per indent.

Revert "Cdodge/restricted oauth2 applications"

Fix for spurious 'cb() never called' errors.

Cdodge/restricted oauth2 applications

Also, help with an echo.

Fix flaky bokchoy test: test_automatic_cohort_help, test_manual_cohort_help

add location to attributes exported to neo4j

Move more urls.py

add child context check to unit page title TNL-5746

Remove config_models & use external config_models repo instead.

Some Jenkins builds are erroring when attempting to set up the
npm environment with the error:

`npm ERR! cb() never called!`

Although it could point to a couple of different things, it is more classically
a sign of a dirty npm environment cache. Cleaning the cache at the start
of any given Jenkins job (which are sourced through this file) should
alleviate the problem.

TNL-5709

Fixing flaky test_studio_help_links